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Port 2570 (hs-port)

IANA assigns port 2570 to hs-port: HS Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
hs-port TCP HS Port Uri Doron -
hs-port UDP HS Port Uri Doron -

Check what is listening on port 2570

Linux: is anything listening on TCP 2570?
sudo ss -tlnp 'sport = :2570'
Linux: UDP 2570
sudo ss -ulnp 'sport = :2570'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2570
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2570 '
Windows (Command Prompt)
netstat -ano | findstr :2570
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2570 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2570
From Windows
Test-NetConnection HOST -Port 2570
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2570

Block port 2570 in the firewall

ufw
sudo ufw deny 2570/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2570 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2570 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2570' -Direction Inbound -Protocol TCP -LocalPort 2570 -Action Block
ufw
sudo ufw deny 2570/udp
iptables
sudo iptables -A INPUT -p udp --dport 2570 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2570 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2570' -Direction Inbound -Protocol UDP -LocalPort 2570 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.